OUTPUT PARAMETERS

DESCRIPTION

Creates a persistent communication object for a ready mode send opera-
tion, and binds to it all the arguments of a send operation.
A communication (send or receive) that uses a persistent request is
initiated by the function MPI_Start.

ERRORS

Almost all MPI routines return an error value; C routines as the value
of the function and Fortran routines in the last argument. C++ func-
tions do not return errors. If the default error handler is set to
MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism